package com.atguigu.springcloud.alibaba.service.impl;

import com.atguigu.springcloud.alibaba.dao.OrderDao;
import com.atguigu.springcloud.alibaba.domain.Order;
import com.atguigu.springcloud.alibaba.service.AccountService;
import com.atguigu.springcloud.alibaba.service.OrderService;
import com.atguigu.springcloud.alibaba.service.StorageService;
import io.seata.spring.annotation.GlobalTransactional;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * @Author 郑豪
 * @Date 2020/4/30 11:04
 **/
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Resource
    private OrderDao orderDao;
    @Resource
    private StorageService storageService;
    @Resource
    private AccountService accountService;

    /**
     * 创建订单->调用库存服务扣减库存->调用账户服务扣减账户余额->修改订单状态
     * 简单说:
     * 下订单->减库存->减余额->改状态
     * GlobalTransactional seata开启分布式事务,异常时回滚,name保证唯一即可
     */


    @Override
    @GlobalTransactional(name = "fsp-create-order",rollbackFor = Exception.class)
    public void create(Order order) {
        log.info("-------------》开始新建订单");
        //1.新建订单
        orderDao.create(order);

        log.info("------>订单微服务开始调用库存，做扣减数量");
        //2.扣减库存
        storageService.decrease(order.getProductId(),order.getCount());
        log.info("------>订单微服务开始调用库存，做扣减结束");

        log.info("------>订单微服务开始调用账户，做扣减money");
        //3.扣减账户金额
        accountService.decrease(order.getUserId(),order.getMoney());
        log.info("------>订单微服务开始调用账户，做扣减结束");

        //修改订单的状态 从0到1 1代表已完成
        log.info("----------->修改订单状态开始");
        orderDao.update(order.getUserId(),0);
        log.info("----------->修改订单状态结束");

        log.info("------>下订单结束");
    }
}
